1. Histology of Nervous Tissue

2. Astrocytes Anchors nervous tissue to surrounding tissues
Allows for x-changes of materials between nervous tissue and fluids
Barrier between neuron and blood
Part of blood brain barrier

4. Microglia Phagocytes Clean up wastes, debris, and bacteria/virus
Immune function for the neuron

6. Ependymal Cells Brain and Spinal Cord Only
Line the cavities of the CNS
Produce Cerebral Spinal Fluid (CSF)
This fluid helps to protect and nourish the cells of the CNS
Specialized Fluid

8. Oligodendrocytes Wrap nerve fibers
Similar to a burrito shell around its contents
Covering is called the “myelin sheath”
Found in CNS Only
Insulates the neuron for faster transmission of action potentials
Neurons are called “white matter” if they have this wrapping

10. Schwann Cells PNS (Peripheral Nervous System) Only
Myelin Sheaths of the neurons out of the CNS
Same Function
White matter is term for neurons with this covering

12. Satellite Cells Surround the cell bodies of the neuron
Cell body is the “cell” part of a neuron contains all normal cell organelles and DNA
Protection of the cell body is the main function

14. How does Glia Differ from a Neuron
Glia has the ability to repair itself if damaged
Glia cannot generate an action potential
More glial tissue than nervous tissue
Glia is the protective/caretaker material associated with nervous tissue